1999 Ford F-150 4.2L Hesitation, Misfire
costumer complant lag power miss out check pugs replaced check codes, check mas air flow sensor with lab scope snap throttle to wide open,won't go over 3. volts cleaned some replaced a little better my consern is scanner shows mas sensor @@52g/s at 2.34 volts ...
FIX posted 12/30/2005
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Message Closed w/FIX
Vehicle Data1999 Ford F-150
Trouble Codes
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Message Closed w/FIX
Vehicle Data
1999 Ford F-150
VIN | 1FTZ1729XK |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / mpfi |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, Misfire |
Occurs | Cold, Hot, on Accel |
Misc. | Fuelpresure 34 Volume 12Oz 10Seconds |
Trouble Codes
P0171 | Fuel System Too Lean (Bank 1) |
P0174 | Fuel System Too Lean (Bank 2) |
P1518 | Throttle Actuator Control Module Serial Data Malfunction |